VERFAHREN ZUR OBERFLÄCHENBEARBEITUNG EINES KNOCHENIMPLANTATS

摘要

A method of surface finishing a bone implant comprises the steps of roughening a surface of the implant by blasting with abrasive particles and then pickling the surface-roughened implant in a pickling solution in order to loosen any partially embedded abrasive blasting particles that may be contaminating the surface of the implant. Thereafter the roughened surface of the implant is cleaned by mechanical action to detach the loosened abrasive particles therefrom. The pickling and cleaning steps are not intended to produce any additional roughening of the treated surface, which should be structured to the required roughness by the initial abrasive blasting, typically such that the Ra and Rt roughness parameters are 3‰¤ Ra ‰¤7 µm and 20‰¤ Rt ‰¤70 µm respectively.